Theory of optical imaging beyond the diffraction limit with a far-field superlens

Stéphane Durant; Zhaowei Liu; Nicholas Fang; Xiang Zhang

doi:10.1117/12.680804

30 August 2006 Theory of optical imaging beyond the diffraction limit with a far-field superlens

Stéphane Durant, Zhaowei Liu, Nicholas Fang, Xiang Zhang

Proceedings Volume 6323, Plasmonics: Metallic Nanostructures and their Optical Properties IV; 63231H (2006) https://doi.org/10.1117/12.680804
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Recent theoretical and experimental studies have shown that imaging with resolution well beyond the diffraction limit can be obtained with so-called superlenses. Images formed by such superlenses are, however, in the near field only, or a fraction of wavelength away from the lens. In this paper, we propose a far-field superlens (FSL) device which is composed of a planar superlens with periodical corrugation. We show in theory that when an object is placed in close proximity of such a FSL, a unique image can be formed in far-field. As an example, we demonstrate numerically that images of 40 nm lines with a 30 nm gap can be obtained from far-field data with properly designed FSL working at 376nm wavelength.

Citation Download Citation

Stéphane Durant, Zhaowei Liu, Nicholas Fang, and Xiang Zhang "Theory of optical imaging beyond the diffraction limit with a far-field superlens", Proc. SPIE 6323, Plasmonics: Metallic Nanostructures and their Optical Properties IV, 63231H (30 August 2006); https://doi.org/10.1117/12.680804

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